1.

Which two signs should be interchanged to make the given equation correct?(580 ÷ 80) + 90 × 8 - 30 = 5241. ÷ and –2. + and ÷3. + and –4. × and +

Answer» Correct Answer - Option 1 : ÷ and –

Using option 1

÷ and –

(580 - 80) + 90 × 8 ÷ 30

According to BODMAS rule:

500 + 90 × 0.266

500 + 24

524 = 524

L.H.S = R.H.S

Using option 2

+ and ÷

(580 + 80) ÷ 90 × 8 - 30

According to BODMAS rule:

660 ÷ 90 × 8 - 30;

7.33 × 8 - 30 ≠ 524

Using option 3

+ and –

(580 ÷ 80) - 90 × 8 + 30

According to BODMAS rule:

7.25 - 90 × 8 + 30 ≠ 524

Using option 4

× and +

(580 ÷ 80) × 90 + 8 - 30

According to BODMAS rule:

7.25 × 90 + 8 - 30 ≠ 524

Hence, interchanging ÷ and – will make equation correct.



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